Definition

A very large number that is equal to one followed by 48 zeros in the British system, or one followed by 27 zeros in the American system.

Example

In the British numbering system, an octillion is a number with 48 zeros after it.

Conversation

Did you know that an octillion is a real number?

No way, I had no idea! What does it even mean?

It’s actually equal to a thousand raised to the power of eight.

That's incredible! I can't even imagine how big that number is.

Synonyms & Antonyms

Root Explanation

Octillion → It is formed from "octo-" (from Latin "octo", meaning eight) and "-illion" (a suffix used in large numbers, derived from the Latin "mille", meaning thousand). The word "octillion" refers to a number that is a thousand raised to the eighth power, or one followed by 27 zeros.

Memory Tip

Think of 'eight' ('octo-') and remember that 'octillion' represents a number that is a thousand multiplied by itself eight times.

Visually Confused Words